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CHAPTER 8
Wiring Precautions
8.1
Installation site and operating environment
Operating environment: Indoors
Do not install the inverter in locations subject to high temperatures or humidity, or where the air
contains high levels of dust or metallic particles. Select a well ventilated location for installing the
inverter to ensure that it receives sufficient amounts of cooling air:
Operating temperature:
From -10·C to +40·C ( 50·C without cover)
Relative humidity:
90% maximum; no condensation
Altitude:
1,000 meters (3,300
ft)
maximum
Vibration:
Acceleration at 0.5G max. (20 to 50Hz)
Amplitude at 0.1mm max. (50 to 100Hz)
*
See Figure 1.1. (page2) for a diagram showing minimal access and ventilation clearances
necessary around the inverter when choosing an installation site.
8.2 Main circuit connections
8.2.1 Power supply to the inverter
Mount a molded-case circuit breaker (MCCB), an electromagnetic contactor, an input reactor, and
a radio noise reduction filter between the input power supply and the inverter.
1)
Molded-case circuit breaker
Install a molded-case circuit breaker at the power supply end to protect the invertere's circuits.
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